Andrews, John, and Nick Jelley. 2013. Energy Science. 2nd Revised edition. Oxford: Oxford University Press.
Blundell, Stephen J., and Katherine M. Blundell. 2009. Concepts in Thermal Physics. 2nd Revised edition. Oxford: Oxford University Press.
Sørensen, Bent and ScienceDirect (Online service). 2017. Renewable Energy: Physics, Engineering, Environmental Impacts, Economics and Planning. Fifth edition. London, United Kingdom: Academic Press is an imprint of Elsevier. http://ezproxy.library.qmul.ac.uk/login?url=http://www.sciencedirect.com/science/book/9780128045671.